SageMilk Signs Licensing Agreement with Free Digital Textbook Provider CK-12 Foundation

AUSTIN, Texas and PALO ALTO, Calif., Jan. 20, 2011 /PRNewswire/ -- SageMilk and CK-12 Foundation today announced the launch of the first phase of CK-12 FlexBook study-aid apps as part of a collaboration to create educational mobile apps from CK-12's portfolio of free, online, customizable digital te

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